Sidelink Beam Tracking Using PSBCH-Free Synchronization Signals
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Solution Overview
Problem
Existing communication networks face challenges in effectively configuring and transmitting synchronization signals for beam tracking and management in sidelink communication, particularly in scenarios requiring diverse and wide frequency bands supported by 6G networks.
Innovation Solution
The method involves transmitting beam management (BM)-sidelink (S)-synchronization signal blocks (SSBs) that include sidelink-primary synchronization signals (S-PSS) and sidelink-secondary synchronization signals (S-SSS) without a physical sidelink broadcast channel (PSBCH), with BM reference signals mapped to specific transmission resources to minimize interference, and utilizing independent configuration for synchronization and beam management S-SSBs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beam management S-SSBs include PSBCH for complete signal structure, then signal completeness is improved, but interference with beam management reference signals increases
Solution Approach 1:
The patent divides synchronization signal transmission into two distinct types: Sync-S-SSBs that include PSBCH for complete signal structure and initial access, and BM-S-SSBs that exclude PSBCH but include beam management reference signals for beam tracking. This segmentation allows each S-SSB type to be optimized for its specific function without interference.
Solution Approach 2:
The patent extracts the PSBCH component from BM-S-SSBs to create a specialized beam management signal structure. By removing PSBCH from beam management S-SSBs, the patent eliminates interference between broadcast channel signals and beam management reference signals, while maintaining signal completeness through the Sync-S-SSB transmission.
2Object-affected harmful factors
If separate transmission resources are allocated for Sync-S-SSB and BM-S-SSB, then interference is minimized, but transmission complexity increases
Solution Approach 1:
The patent segments the S-SSB transmission into two distinct types with different resource allocation: Sync-S-SSBs for initial access and beam sweeping, and BM-S-SSBs for beam management. This segmentation enables independent configuration and transmission of each type, minimizing interference while maintaining manageable complexity through standardized transmission patterns.
3Productivity
If BM reference signals are mapped to PSBCH transmission resources, then resource utilization is improved, but signal interference increases
Solution Approach 1:
The patent segments reference signal mapping by separating Sync-S-SSB and BM-S-SSB transmissions. BM reference signals are mapped to resources allocated specifically for BM-S-SSBs, not to PSBCH transmission resources. This segmentation prevents interference between different signal types while maintaining efficient resource utilization through dedicated allocation.
Data Source
AI summary
Disclosed are a method and apparatus for configuring and transmitting a synchronization signal for beam tracking and management in sidelink communication. The method for a first UE comprises the steps of: transmitting one or more BM-S-SSBs to a second UE; and on the basis of the one or more BM-S-SSBs, receiving a measured BSI from the second UE, wherein each of the one or more BM-S-SSBs includes an S-PSS and an S-SSS without a PSBCH.